A young woman Irina, a businesswoman, brings up her 10-year-old son Kirill alone. And everything seems to be good: there is money, an apartment in the center, the son studies in college.... But the boy catastrophically lacks a father. He envies his peers who have a father and suffers a lot....

Shortly after the nuclear Chornobyl disaster in 1986, a father risks his life and returns to his deserted apartment to retrieve his front door.